William J. Witkowski, DMD
Dentist · Durham, CT
William J. Witkowski, DMD is a dentist with a practice address in Durham, Connecticut, and NPI 1790907772, issued on May 2, 2007. Check the license (Connecticut 5206, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William J. Witkowski
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License number
- 5206 CT
Self-reported in NPPES; status is on the state search - Practice location
- 360 Main St # D, Durham, CT 06422
- Phone
- (860) 349-1123
- Enumerated
- May 2, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (860) 349-2040
- Entity
- Type 1 · individual
8 nearest dentist records → All 862 in Connecticut → Look up another NPI →
Also registered at 360 Main St # D
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allan Witkowski, DMDDentist1861614851
Verify William J. Witkowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 5206Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average dentist in 2024
38 Medicare Part D claims for 32 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $19.09
1 payment: food and beverage; the largest payer was Straumann USA LLC. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William J. Witkowski among 862 dentist records in Connecticut
William J. Witkowski, DMD is one of 862 dentist records with a practice address in Connecticut. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 21% of them.
- NPI issued2007 · 21% of these records are older, 55% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 dentist records list a practice address in Durham
They are 3 of the 59 NPPES records with a practice address in Durham, and 862 dentist records in Connecticut.
All 862 in Connecticut → Every provider in Durham → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Casey Foster, DMDDurham, CT 064221760176382
- Allan Witkowski, DMDDurham, CT 064221861614851
- Stewart Danziger, DMDEast Hampton, CT 064241881805158
- John Crocamo, DMDDerby, CT 064181568501427
- Melissa Donofrio, DMDEssex, CT 064261477757862
- Carrie Gray, D.M.DDerby, CT 064181619393972
- Dana Rotella, DDSEssex, CT 064261871680678
- Bruce Sofferman, DDSDerby, CT 064181093868986
Common questions
What is William J. Witkowski, DMD's NPI number?
William J. Witkowski, DMD's National Provider Identifier (NPI) is 1790907772, issued on May 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William J. Witkowski, DMD located?
The NPPES record lists a practice address at 360 Main St # D, Durham, CT, 06422. Phone: (860) 349-1123. Providers update this record themselves, so call before visiting.
How can I verify William J. Witkowski, DMD's license?
NPPES lists Connecticut license number 5206, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does William J. Witkowski, DMD prescribe under Medicare Part D?
In 2024, William J. Witkowski, DMD had 38 Medicare Part D claims for 32 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.